Granted Patent
Utility
US 5,171,631 · App. 07/555,928
Spacer/extender for titanium dioxide in pigment systems for coatings
Inventor:
Adrian S. Adkins
Patented Case
View Patent ↗
Granted: Dec 15, 1992
Filed: Jul 19, 1990
Inventor
Adrian S. Adkins
Assignee (at issue)
Aluminum Company of America
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.